openface/docs/demo-1-web.md

# Demo 1: Real-Time Web Demo
See [our YouTube video](https://www.youtube.com/watch?v=LZJOTRkjZA4)
of using this in a real-time web application
for face recognition.
The source is available in
[demos/web](https://github.com/cmusatyalab/openface/blob/master/demos/web).
The browser portions have been tested on Google Chrome 46 in OSX.

<a href='https://www.youtube.com/watch?v=LZJOTRkjZA4'><img src='https://raw.githubusercontent.com/cmusatyalab/openface/master/images/youtube-web.gif'></img></a>

This demo does the full face recognition pipeline on every frame.
In practice, object tracking
[like dlib's](http://blog.dlib.net/2015/02/dlib-1813-released.html)
should be used once the face recognizer has predicted a face.

In the edge case when a single person is trained,
the classifier has no knowledge of other people and
labels anybody with the name of the trained person.

The web demo does not predict unknown users and the saved
faces are only available for the browser session.
If you're interested in predicting unknown people,
one idea is to use a probabilistic classifier to predict
confidence scores and then call the prediction unknown
if the confidence is too low.
See the [classification demo](http://cmusatyalab.github.io/openface/demo-3-classifier/)
for an example of using a probabilistic classifier.

---

## Setup and Running

To run on your system, first follow the
[Setup Guide](setup.md) and make sure you can
run a simpler demo, like the [comparison demo](demo-2-comparison.md).

If you experience issues with the web demo,
please post to
[our mailing list](https://groups.google.com/forum/#!forum/cmu-openface)
and include the the WebSocket log contents from
`/tmp/openface.websocket.log` if available.

### With Docker

Start the HTTP and WebSocket servers on ports 8000 and 9000 in the
Docker container with:

```
docker run -t -p 8000:8000 -p 9000:9000 bamos/openface
```

Then find the IP address of the container and access the demo
in your browser at `http://docker-ip:8000`.

### Manual Setup
Install the requirements for the web demo with
`./install-deps.sh` and `sudo pip install -r requirements.txt`
from the `demos/web` directory.

Start the HTTP and WebSocket servers on ports 8000 and 9000, respectively,
with `./demos/web/start-servers.sh`.
If you wish to use other ports,
pass them as `./demos/web/start-servers.sh HTTP_PORT WEBSOCKET_PORT`.

You should now also be able to access the demo from your browser
at `http://localhost:8000` if running locally or
`http://your-server:8000` if running on a server.